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BIAS-BOOSTING CIRCUIT WITH DUAL CURRENT MIRRORS FOR RF POWER AMPLIFIER
BIAS-BOOSTING CIRCUIT WITH DUAL CURRENT MIRRORS FOR RF POWER AMPLIFIER
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机译:带有双电流镜的偏置升压电路,用于RF功率放大器
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摘要
An RF power amplifier circuit has a signal input and a signal output. An input matching network connected to the signal input, and an output matching network is connected to the signal output. There is a power amplifier with an input connected to the input matching network, and an output connected to the output matching network. A bias boosting circuit is connected to the input of the power amplifier, and the bias boosting circuit comprises a cascode current mirror that is defined by a first cascode circuit and a second cascode circuit, and a biasing transistor that is connected to an output of the cascode current mirror. The biasing transistor, together with the power amplifier, defines a current mirror. The bias boosting circuit is thus a dual current mirror circuit that boosts the bias of the power amplifier.
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